Enter the expression
Type a five-field Unix schedule or a supported @alias.
FREE CRON PARSER
Free Cron Expression Parser
Validate a five-field Unix cron schedule and see exactly when it runs.
Your expression and results are never uploaded or stored.
- 1Enter expression
- 2Parse in browser
- 3Check next runs
1 · Enter expression
Enter a cron schedule
Use five Unix fields in the order minute, hour, day, month, weekday.
Calculating upcoming runs in your browser.
3 · Check next runs
Parsed result
Enter a cron expression to see its field breakdown and next runs.
Normalized expression
Schedule summary
Both day fields are restricted, so the schedule runs when either one matches (Unix cron OR rule).
Field breakdown
Next 10 runs
FREE UNIX CRON GUIDE
Check a cron schedule in three steps
Review syntax and real upcoming run times before deployment.Choose timezone
Match the device timezone or UTC to your scheduler configuration.
Check next runs
Review each field and the next ten times, then copy the result.
Pre-deployment schedule check
Why parse a cron expression?
Avoid jobs running more often—or on different days—than intended.
Preview next runs
Confirm the exact dates and times before enabling a job.
Understand day rules
See the Unix OR rule when day-of-month and weekday are both restricted.
Private local processing
Operational schedules never leave your browser.
FREE CRON PARSER FAQ
Cron expression parser FAQ
Learn about free use, five-field syntax, timezones, and day matching.1Is the cron expression parser free?
Yes. It is free with no usage limit, and no account is required.
2Which cron format is supported?
It supports Unix five-field expressions: minute, hour, day, month, and weekday. Quartz and AWS seconds or year fields are not supported.
3What if day-of-month and weekday are both set?
Traditional Unix cron uses OR, not AND, when both fields are restricted. The job runs when either field matches.
4Why can the server run time differ?
Your server or scheduler may use a different timezone. Compare the device timezone and UTC option with the actual scheduler setting.